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17 September 2009LIF bio-aerosol threat triggers: then and now
Bio-aerosol terrorist attacks have been carried out against civilians in the United States and
elsewhere. Unfortunately, recurrence appears inevitable. A fast, reliable, and inexpensive bioaerosol
threat detection trigger can be an important tool for detect-to-protect and detect-to-treat
countermeasure scenarios. Bio-aerosol threat detection triggers employing light, historically laser
light but recently LED light, for induced native- or
auto-fluorescence (LIF) have been developed for
well over a decade without a generally accepted solution being found. This paper presents a brief
history of LIF triggers and reviews many vendor efforts, past and current. Various technical
approaches and design considerations are discussed. Triggers from ICx technology, currently
available or in development, are also discussed.
Richard DeFreez
"LIF bio-aerosol threat triggers: then and now", Proc. SPIE 7484, Optically Based Biological and Chemical Detection for Defence V, 74840H (17 September 2009); https://doi.org/10.1117/12.835088
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Richard DeFreez, "LIF bio-aerosol threat triggers: then and now," Proc. SPIE 7484, Optically Based Biological and Chemical Detection for Defence V, 74840H (17 September 2009); https://doi.org/10.1117/12.835088